Vulnerability Details : CVE-2020-8517

An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.
Published 2020-02-04 20:15:15
Updated 2021-07-21 11:39:24
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionInput validationDenial of service

Products affected by CVE-2020-8517

Threat overview for CVE-2020-8517

Top countries where our scanners detected CVE-2020-8517
Top open port discovered on systems with this issue 3128
IPs affected by CVE-2020-8517 1,282,815
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2020-8517!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-8517

EPSS FAQ
1.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-8517

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 NIST

CWE ids for CVE-2020-8517

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-8517

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